Improvement in dampers



E. C. HARRISON.

Damper.

Patented May 26, 1863.

Mhwas W M M N. PETERS. Phclo-Lflhognpher. wmin eim n. C.

UNITED STATES PATENT OFFICE.

EDWARD O. HARRISON, OF NEW YORK, N. Y.

IMPROVEMENT IN DAM PERS.

Specification forming part of Letters Patent No. 38,678, dated May 26, 1863.

To all whom it may concern.-

Be it known that I, EDWARD G. HARRISON, of the city, county, and State of New York, have invented a new and useful Improvement in Dampers and Valves for Fire-Grates and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in Which- Figure 1 is a transverse vertical section of the fire-place of a grate with my invention applied to it. ac .212, Fig. 2, indicate the plane of section. Fig. 2, a plan or top view of the same.

Similar letters of reference indicate corresponding parts in the two figures.

This invention relates to a combination of the valve and damper of a fire-grate, as hereinafter fully shown and described, whereby s id parts may be applied more economically than heretofore and manipulated or adjusted with greater facility.

To enable those skilled in the art to fully 11 iderstand and construct my invention, I will proceed to describe it.

A represents a fire place in which a grate of ordinary construction may be fitted in the usual manner, and B represents the opening at the upper part of the fire-place, which leads into the flue or chimney, said openings B being directly over or above the grate.

0 represents a valve, which is constructed of cast-iron-at least that would be the cheapest and consequently the preferable material. This valve 0 is secured in the lower part of a metal frame, D, by a hinge orjoint, a, the frameD being fitted in the opening B. The IJWQI part of the valve 0 has a recess, 1), in its face side to receive a damper, E, which is fitted 0n the pintle of the hinge or joint a, the same joint or hinge answering for both the damper and valve, as will be fully understood by referring to Fig. 2. The damper E when turned back against the valve 0 will fit snugly in the recess 12, so to form a flush surface, as shown in Fig. 1, and when the valve and damper are both thrown fully back, as shown in Fig. 1, the opening B will be fully open, and when the damper E is'raised, as shown in red in Fig. 1, the opening B will be partially closed, and by raising the valve 0 the opening B will be entirely closed. During summer, or when the grate is not used, the valve (3 is raised so as to close the opening B, and during winter, when the grate is in use, the valveis lowered and the damper E is raised so as to contract the opening B when the fire is under way and it is desired to have the heat thrown into the room, the damper E being lowered when the fire is kindled or lighted, in order to obtain a good draft. The ordinary arrangement is to have a valve placed some distance up in the flue, the damper E being placed about in the position as shown in my arrangement, and in order to close and open the valve when arranged in the old way, a rod has to be inserted up into the flue, and considerable difiiculty is frequently experienced in adjusting or operating the valve.

By my improvement it will be seen that the valve and damper, being combined or fitted on a common joint or hinge, may either of them be adjusted with the greatest facility.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination of the valve 0 and damper F, arranged substantially in the manner and tor the purpose herein set forth.

' EDWD. O. HARRISON. Witnerses:

ROB. H. LOUDER, G. W. REED. 

